The 10 Most Important Things In The World Right Now

The Virgin Galactic SpaceShipTwo rocket explodes in midair during a test flight above the Mojave Desert in California on Friday.
REUTERS/Kenneth Brown
Good morning! Here's what you need to know for Monday.

4. The latest report on climate change from the United Nations warns that failure to reduce emissions could change the climate so dramatically it "might become dangerous for people to work or play outside during the hottest times of the year," The New York Times writes.